#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>

int func(int a, int b) {

	int d = a;

	a = b;

	b = d;

	return a;
}

int main()
{
	double a = 3;

	double b = 5.5;

	func(a, b);

	printf("%lf %lf\n", a, b);
	
	return 0;
}
